From 67b5e9cdc6eb8d7d00a2a70d01140c11c7428e46 Mon Sep 17 00:00:00 2001
From: wenshao <szujobs@hotmail.com>
Date: Mon, 5 Feb 2018 17:43:55 +0800
Subject: [PATCH] bug fixed for issue #2210

---
 .../druid/pool/vendor/MSSQLValidConnectionChecker.java        | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/alibaba/druid/pool/vendor/MSSQLValidConnectionChecker.java b/src/main/java/com/alibaba/druid/pool/vendor/MSSQLValidConnectionChecker.java
index 76527af2bf..94102c23c9 100644
--- a/src/main/java/com/alibaba/druid/pool/vendor/MSSQLValidConnectionChecker.java
+++ b/src/main/java/com/alibaba/druid/pool/vendor/MSSQLValidConnectionChecker.java
@@ -44,7 +44,9 @@ public class MSSQLValidConnectionChecker extends ValidConnectionCheckerAdapter i
 
         try {
             stmt = c.createStatement();
-            stmt.setQueryTimeout(validationQueryTimeout);
+            if (validationQueryTimeout > 0) {
+                stmt.setQueryTimeout(validationQueryTimeout);
+            }
             stmt.execute(validateQuery);
             return true;
         } catch (SQLException e) {